A fitting used with a union nut and a tailpiece to form a union.
NSN 6135-01-542-0659
NSN 5935-01-290-3797
NSN 5945-01-420-5083
NSN 6645-00-726-2716
NSN 7035-00-908-4933
NSN 5950-01-549-9521
NSN 6685-00-631-3549
NSN 5895-01-523-2842
NSN 6610-00-553-5103
NSN 6130-01-107-3279
NSN 5999-01-358-1138
NSN 6135-01-084-1609